package struts.action;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import struts.form.ActionForm;
import struts.form.FullForm;
import struts.util.XmlBean;

public class ActionServlet extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * Constructor of the object.
	 */
	public ActionServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String path = getPath(request.getServletPath());
		Map<String, XmlBean> map = (Map<String, XmlBean>) this.getServletContext().getAttribute("struts");
		XmlBean xmlBean = map.get(path);
		String formclass = xmlBean.getFormClass();
		ActionForm form = FullForm.full(formclass, request);
		String actionType = xmlBean.getActionType();
		Action action = null;
		String url = "";
		try{
			Class clazz = Class.forName(actionType);
			action = (Action) clazz.newInstance();
			url = action.execute(request, form,xmlBean.getForwardMap());
		}catch (Exception e) {
			e.printStackTrace();
		}
		RequestDispatcher dis = request.getRequestDispatcher(url);
		dis.forward(request, response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}
	
	private String getPath(String servletPath){
		return servletPath.split("\\.")[0];
	}

}
